//
// Copyright (c) 2009, Markus Rickert
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//

#ifndef RL_UTIL_IO_HEX_H
#define RL_UTIL_IO_HEX_H

#include <limits>
#include <ostream>

#include "BasicIosRestorer.h"

namespace rl
{
	namespace util
	{
		namespace io
		{
			template<typename T>
			class Hex
			{
			public:
				explicit Hex(const T& value) :
					value(value)
				{
				}
				
				const T& operator()() const
				{
					return this->value;
				}
				
			protected:
				
			private:
				const T& value;
			};
			
			template<typename T>
			inline Hex<T> hex(const T& value)
			{
				return Hex<T>(value);
			}
			
			template<typename T>
			inline ::std::ostream& operator<<(::std::ostream& stream, const Hex<T>& value)
			{
				BasicIosRestorer<char> restorer(stream);
				stream.fill('0');
				stream.setf(::std::ios_base::hex, ::std::ios_base::basefield);
				stream.width(::std::numeric_limits<T>::digits / 4);
				return stream << static_cast<int>(value());
			}
		}
	}
}

#endif // RL_UTIL_IO_HEX_H
